Christmas tunes will be presented in shiny, bright brass instruments during the “Christmas in Brass” concert at 7 p.m. Dec. 21 at the Immaculate Heart of Mary Church.An 11-piece brass ensemble, made up of musicians from the Los Alamos Symphony Orchestra, Los Alamos Big Band, Santa Fe community orchestra and other groups, will present the free concert.Jerry Morzinski, one of the performers, said the concert has been presented for six years.He said he has presented the concert with low brass instruments, tubas and euphoniums. This year, Morzinski said, flugelhorns and trumpets have been added.The additional instruments have been added “just for a little variety,” he said. “(It) gives a little more flexibility because there’s more voicing.”Secular and sacred tunes will be featured in the concert program.“I like the music,” Morzinski said, “and I like this time of year and I think people like this type of music, too.”He added, “There’s a little bit of nostalgia; most of us grew up with (this music) and I just want to keep doing it.” Performing these pieces with brass instruments “is especially appropriate at Christmas time because it has that joyful sound,” Morzinski said. “The heavy representation of low brass will be a more mellow sounding group than what you hear with a typical brass quintet.”